To obtain the above new compound of a specific formula, high in retention in dark dyeing, namely, performance excellent in build-up, as a red dye of an organic material containing a hydroxyl group and/or amide group.
This monoazo dye is a compound of formula I {A is a (substituted) alkylene or (CH2)m-Q1-(CH2)n (Q1 is O, S, etc.; (m) and (n) are each 2-4); B is β-carboxyvinyl, a (substituted) alkyl or a (substitute) phenyl; D is a group of formula II (* is a bond linked to an azo group; R4 is H, methyl, etc.; (p) is 0 or 1); (x) is a group of formula III [R5 and R6 are each H, a (substituted) alkyl, etc.], etc.; Y is CH=CH2 or CH2CH2Z [Z is (thio)sulfuric ester, etc.]}. The compound, for example, is obtained by condensing a monoazo intermediate compound of formula IV, an aliphatic amine compound of formula V and a compound of the formula H-X with a 2,4,6-trihalogeno-s-triazine in an arbitrary order.
ARAKI SATOYUKI
UEDA YASUYOSHI
